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D14049.07
March 2010
Grey Headline
(continued)
TANDBERG
VIDEO COMMUNICATION SERVER
ADMINISTRATOR GUIDE
Introduction
Overview and
status
System
configuration
VCS
configuration
Zones and
neighbors
Clustering and
peers
Call
processing
Bandwidth
control
Firewall
traversal
Appendices
Applications
Maintenance
Glossary
Term
Definition
OCS Relay
A VCS application that enables interoperability between Microsoft Office Communications Server (OCS) and FindMe. See the
OCS Relay
section for more information.
Peer
A VCS that has been configured to belong to a cluster.
PEM
Privacy-Enhanced Electronic Mail:
An IETF proposal for securing messages using public key cryptography.
Pipe
In relation to the VCS, a means of controlling the bandwidth used on a link.
Proxy,
Proxy server
In SIP, an intermediary entity that acts as both a server and a client for the purpose of making requests on behalf of other clients. A proxy server primarily plays the
role of routing, which means its job is to ensure that a request is sent to another entity “closer” to the targeted user. Proxies are also useful for enforcing policy (for
example, making sure a user is allowed to make a call). A proxy interprets, and, if necessary, rewrites specific parts of a request message before forwarding it. While
a proxy can set up calls between SIP endpoints, it does not participate in the call after it is set up.
QoS
Quality of Service
Mechanisms that give a network administrator the ability to provide different priorities to an applications' network traffic.
RAS
Registration, Admission and Status
A protocol used between H.323 endpoints and a gatekeeper to register and place calls.
Registrar
In SIP, a server that accepts REGISTER requests and places the information it receives in those requests into the location service for the domain it handles. This
information is used to advise other SIP Proxies/Registrars where to send calls for that endpoint.
Regex
Regular expression
A pattern used to match text strings according to a POSIX-defined syntax.
RFC
Request for Comments
A process and result used by the IETF for Internet standards.
RS-232
A commonly used standard for computer serial ports.
RTCP
RTP Control Protocol
A control protocol for RTP. Defined by
RFC 3550 [17]
.
RTP
Real-time Transport Protocol
Real time protocol designed for the transmission of voice and video. Defined by
RFC 3550 [17]
.
SASL
Simple Authentication and Security
Layer
A framework for authentication and data security in Internet protocols.
SSH
Secure Shell
An encrypted protocol used to provide a secure CLI.
SIMPLE
Session Initiation Protocol for Instant
Messaging and Presence Leveraging
Extensions
An instant messaging and presence protocol based on SIP.
SIP
Session Initiation Protocol
IETF protocol for controlling multimedia communication. Defined by
RFC 3261 [20]
.